<template>
    <div class="comment-reply">
        <van-nav-bar
            :title="comment.reply_count > 0 ? `${comment.reply_count}条回复` : '暂无回复'"
        >
            <van-icon
                slot="left"
                name="cross"
                @click="$emit('close')"
            />
        </van-nav-bar>

        <div class="scroll-wrap">
            <!-- 当前评论项 -->
            <comment-item :comment="comment" />
            <!-- /当前评论项 -->

            <!-- 评论的回复列表 -->
            <van-cell title="全部回复" />
            <comment-list
                :list="commentList"
                :source="comment.com_id"
                type="c"
            />
            <!-- /评论的回复列表 -->
        </div>

        <!-- 底部区域 -->
        <div class="reply-bottom">
            <van-button
                class="write-btn"
                size="small"
                round
                @click="isPostShow = true"
            >写评论</van-button>
        </div>
        <!-- /底部区域 -->

        <!-- 发布评论 -->
        <van-popup v-model="isPostShow" position="bottom">
            <comment-post
                :target="comment.com_id"
                @post-success="onPostSuccess"
                type="c"
            />
        </van-popup>
        <!-- /发布评论 -->
    </div>
</template>

<script>
import CommentItem from './comment-item'
import CommentList from './comment-list'
import CommentPost from './comment-post'

export default {
  name: 'CommentReply',
  components: {
    CommentItem,
    CommentList,
    CommentPost
  },
  props: {
    comment: {
      type: Object,
      required: true
    }
  },
  data () {
    return {
      isPostShow: false,
      commentList: [] // 评论的回复列表
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    onPostSuccess (data) {
      // 更新回复的数量
      // eslint-disable-next-line vue/no-mutating-props
      this.comment.reply_count++

      // 关闭弹层
      this.isPostShow = false

      // 将最新回复的内容展示到列表的顶部
      this.commentList.unshift(data.new_obj)
    }
  }
}
</script>

<style scoped lang="less">
.scroll-wrap {
    position: fixed;
    top: 92px;
    left: 0;
    right: 0;
    bottom: 88px;
    overflow-y: auto;
}

.reply-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    border-top: 1px solid #d8d8d8;
    .write-btn {
        width: 60%;
    }
}
</style>
